Spark-arrester.



No. 737,802. PATENTED SEPT. 1, 1903. H. S. WAINWRIGHT.

SPARK ARRBSTBR.

APPLICATION FILED MAY 19, 1902.

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No. 737,802. PATENTED SEPT. 1, 1903.

' H. S. WAINWRIGHT.

SPARK ARRESTER.

APPLIOATION FILED MAY 19, 1902.

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H. s. WAINWRIGHT.

SPARK ARRESTER.

APPLICATION FILED MAY 19, 1902.

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H. S. WAINWRIGHT.

SPARK ARRESTER.

APPLICATION FILED MAY 19, 1902.

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H. s. WAINWRIGHT.

SPARK ARRESTER.

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UNITED STATES Patented September 1, 1903.

PATENT OF ICE;

SPARK-ARRESTER;

SPECIFICATION forming part of Letters Patent No. 737,802, datedSeptember 1, 1903.

Application filed May 19, 1902.

To all whom, it may concern.-

Be it known that I, HARRY SMITH WAIN- WRIGHT, a subject of the King ofGreat Britain and-Ireland, residing at Ashford, in the county of Kent,England, have invented Improvements in Spark-Arresters, of which thefollowing is a specification.

This invention consists of improvements in locomotive-engines, and hasfor its object to enable a conical or other tube-like spark-arrestingdevice, (hereinafter called a spark-arrester,) normally located betweenthe blastpipe and the chimney,to be easily and quickly moved, so aspromptly to afford access to the smoke-box ends of lire-tubes forcleaning or other purpose, without its being necessary for that purposecompletely to disconnect and remove the spark-arrester. This provisionfor moving the spark-arrester facilitates the use of a short blast-pipewhose discharge-orifice is considerably below the upmost row offire-tubes, which is an arrangement that in actual practice contributesto economy in coal consumption.

Each of Figures 1 to l, inclusive, of the accompanying drawings shows invertical section sufficient of a smoke-box of a locomotiveengine andaccessories to illustrate my invention by way of example. Fig. 5 is adetail view; and Fig. 6 is a sectional view corresponding to Fig. 1,taken at right angles thereto for the purpose of illustrating theposition of the spark-arrester in relation to the chimney, thesmoke-box, and the fire-tubes.

In the arrangement illustrated by Fig. l of the drawings thespark-arrester is of telescopic construction,one section being adaptedto enter another when access is to be gained to the fire-tubes. Theseveral sections are shown drawn out into position for use. As will beseen, the lowest section a rests on a blower-ring Z) at the upper end ofthe blastpipe 0, which in this example is of the economical short typealready referred to. The upmost section (Z of the spark-arrester isarranged to be capable of movement in a vertical sense and is providedwith suitable guides e, which are shown secured to a chimneycone 9, butmight be secured to the chimneybase It. \Vhen in its lowest position, asillustrated, it is supported by suitable devices, such as projections f,which rest upon or en- $eria1 No 108,083. (No model.)

gage with appropriate supporting means, which may be, for example, ahorizontal grid 2, or an attachment to the chimney-cone or an attachmentto the chimney-base h itself. Thelowest section a is held down byfastening devices, such as hook-bolts j, which may, as shown, also servefor securing the blowerring b. Each of the other sections is held downby projections or the like on the section immediately below it.

In order that the spark-arrester may, when required, quickly collapse inan automatic the lowest section is unfastened it will be moved upward bythe action of a weight or weights or a spring or springs or equivalent.An arrangement for this purpose comprises a lever 7c, having itsfulcruml in a fixed position in the smoke-box. This lever is bifurcatedat one end, which is connected with the lowest section a of thespark-arrester in a manner to allow for the angular movement of thelever. The other arm of the lever is provided with a suitable weight onor it may be with a spring or equivalent so applied that it tends con-'stantly to raise the lowest section of the sparkarrester and if thatsection be unfastened will raise it and so move all. the sections clearof the fire-tube ends,as indicated by dotted lines. Each section belowthe top one is shown provided with projections n (whereof there may bethree or more) at its lower end to engage and raise the section nextabove it.

The several sections may be variously constructed. In Fig. 1 they areshown constructed with frames which comprise top and bottom rings 0 and19, connected by notched or recessed bars q, around which arespirallywound chains 1', located in the notches or recesses of the barsq, whereby they are held in place. The spirally-arranged chains affordinclined surfaces adapted to arrest and throw down sparks and glowingparticles, besides causing escaping steam to whirl, while the openingsof the links and the spaces between adjacent convolutions of the chainsand between the chains and the rings 0 and .19 will allow free passageof gases to the interior of the arrester.

The number of sections in a telescopic spark-arrester may be greater orless than shown, and instead of chains other flexible fashion, means canbe provided whereby when metallic material, as thick wires or rods orwire ropes, may be used.

In lieu of making the arrester telescopic, as shownin Fig. l, for thepurpose of enabling it to collapse, I sometimes construct it, as shownin Fig. 2, of a number of hoops j of round bar-iron connected togetherand to upper and lower rings 0 and p by open links 7;, adapted to allowof the collapsing of the arrester under the action of aweighted orequivalent device, such as described with reference to Fig. 1.

According to another arrangement (illustrated in Fig. 3) I connect upperand lower rin 's 0 and 19 together by interwoven open links Z, each ofwhich is contracted somewhat in the middle in order to keep the linksmutually in place.

In a further modification (illustrated in Fig. 4) I connect the rings 0and 2) together by short solid links on and joint-pins n. Fig. 5 shows aportion of the linkage in section and to a larger scale.

Fig. 6 is a view taken at right angles to Fig. 1. and showing the normalposition of the arrester shown therein in relation to the base h of thechimney and the fire-tubes r. s is the tube-plate, and t is the oppositewall of the smoke-box.

It Will be noted that all the spark-arresters that I have illustratedare tube-like in form, and it will be understood that any appropriateconstruction of tube-like spark-arrester may be arranged so as to bereadily movable in a manner to afford access to fire-tubes accord ing tomy invention, as above set forth.

By the expression tubelike spark-an rester I mean one whose general formis that of a tube whether conical or not and whether it be composed offramework and chains or wire orotherwise constituted so as on the onehand to allow gases to flow from the smokebox through its wall towardthe chimney and on the other hand to obstruct the flow of sparks orglowing particles toward the chimney.

It will be obvious that the constructions hereinbefore described may bevariously modified. without departing from the essential features of theinvention.

WVhat I claim is- 1. In a locomotive-engine, a tube-like openworkspark-arresterlocated in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and adapted to bereduced in length and shifted so as then not to prevent free access tofiretubes to which free access would normally be prevented by saidarrester.

2. In a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and adapted to bereduced in length, means for supporting said arrester in a normalposition in which it will prevent free access to fire-tubes, and meansfor guiding said arrester, when reduced in length as aforesaid, upwardinto a position in which it will not prevent free access to fire-tubesto which it would prevent free access when merely reduced in length asstated.

3. In a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and adapted by changeof position and without dismounting to give free access to fire-tubes towhich free access would normally be prevented thereby, means forsupporting said arrester in its normal position, and a lever by means ofwhich said change of position in said arrester can be produced.

4. In a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and adapted by changeof position and without dismounting to give free access to fire-tubes towhich free access would normally be prevented thereby, means forsupporting said spark-arrester in its normal position, means forsecuring a portion of said arrester in its normal position, and meansadapted, on the release of said portion, to produce said change ofposition.

5. In a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and adapted by changeof position and without dismounting to give free access to fire-tubes towhich free access would normally be prevented thereby, means forsupporting said spark-arrester in its normal position, means forsecuring a portion of said arrester in its normal position, and a leverconnected to the lowerend of said arrester and adapted to produce saidchange of position in said arrester on the release of said portion. I

6. I11 a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections telescopically arranged one Within another and adapted by ch ange of position and without dismounting to give free access to fire-tubesto which free access would be prevented by it in its normal position,and means for supporting said arrester in said normal position.

'7. In a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections telescopically arranged one within another, and a lever wherebytelescopic movement can be produced in said arrester so as to give freeaccess to fire-tubes to which free access would normally be prevented bysaid arrester.

8. In a locomotive-engine, the combination ICO of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from lire-tubes to the chimney and composed ofsections telescopically arranged one within another, means forsupporting said arrester in a normal position, means for securing oneportion of said arrester in its normal position, and means adapted, onthe release of said portion of said arrester, to produce telescopicmovement in said arrester so as to give free access to firetubes towhich free access would normally be prevented by said arrester.

9. In a locomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections telescopically arranged one within another, means forsupporting said arrester in a normal position, means for securing thelower portion of said arrester in its normal position, and a leverconnected to the lower portion of said arrester and adapted, on therelease of the lower portion of said arrester, to produce telescopicmovement in said arrester so as to give free access to fire-tubes towhich free access would normally be prevented by said arrester.

10. In alocomotive-engine, the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and comprising sectionsarranged telescopically one within and one below another and adapted bytelescopic movement and vertical movement to give free access tofire-tubes to which free access would normally be prevented bysaidarrester, means for supporting said arrester in a normal position, andmeans for guiding the top one of said sections vertically.

11. In alocomotive-engine, the combination of a tube-like open-Worksparkarrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and comprising sectionsarranged telescopically one within and one below another, means forsupporting said arrester in a normal position, means for guiding the topone of said sections vertically, and a lever for moving the lowerportion of said arrester into said top section and moving said topsection and said lower portion vertically so as to give free access tofire-tubes to which free access would normally be prevented by saidarrester.

12. In alocomotive-engine, the combination of a tube -like open -workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and comprisingsectionsarranged telescopically one within and one below another, meansfor supporting said arrester in a normal position, means for guiding thetop one of said sections vertically, means for securing one portion ofsaid arrester in its normal position, and means adapted, on

the release of said portion of said arrester, to move the lower portionof said arrester into the top one of said sections and to move said topsection and said lower portion vertically so as to give free access tofire-tubes to which free access would normally be prevented by saidarrester.

13. In a locomotive-engine,the combination of a tube -like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and comprising sectionsarranged telescopically one within and one below another, means forsupporting said arrester in a normal position, means for guiding the topone of said sections vertically, means for securing the lower portion ofsaid arrester in its normal position, and a lever connected to the lowerportion of said arrester and adapted, on the release of the lowerportion of said arrester, to move the lower portion of said arresterinto the top one of said sections and said top section and said lowerportion vertically so as to give free access to fire-tubes to which freeaccess would normally be prevented by said arrester.

14. In alocomotive-engine,the combination, in the smoke-box, of ablast-pipe, an openwork spark-arrester arranged so as to prevent orimpede the passage of sparks from firetubes to the chimney andcomprising a framework composed of upper and lower rings and notched orrecessed longitudinal bars, and chain wound spirally around saidframework and in the notches or recesses of said bars.

15. In a locomotive-engine,the combination of a tube-like open-workspark arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections arranged telescopically one within and one below another, andeach comprising a framework composed of an upper ring and a lower ringand notched or recessed longitudinal bars connecting said ringstogether, and chain wound spirally around said framework and within thenotches or recesses of said bars.

16. In a locomotive-engine,the combination of a tu be-like open -worksparkarrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections arranged telescopically one within and one below another, andeach comprising a framework composed of an upper ring and a lower ringand notched or recessed longitudinal bars connecting said ringstogether, and chain wound spirally around said framework and within thenotches or recesses of said bars, means for supporting said arrester ina normal position, means for securing the lower portion of said arresterin a normal position and a lever connected to the lower portion of saidarrester and adapted, on the release of the lower portion of saidarrester, to move the lower portion of said arrester into the top one ofsaid sections so as to give free access to IIO fire-tubes to which freeaccess would normally be prevented by said arrester.

1 7. In a locomotive-engine,the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections arranged telescopically one within and one below another, andeach comprising a framework composed of an upper ring and a lower ringand notched or recessed longitudinal bars connecting said rings togetherand chain wound spirally around said framework and within the notches orrecesses of said bars, means for supporting said arrester in a normalposition, means for securing the lower portion of said arrester in anormal position, means for guiding the top one of said sectionsvertically, and a lever connected to the lower portion of said arresterand adapted, on the release of the lower portion of said arrester, tomove the lower portion of said arrester into said top section and saidtop section and said lower portion vertically so as to give free accessto fire-tubes free access to which would normally be prevented by saidarrester.

18. In a loco1notive-engine,the combination of a tube-like open-workspark-arrester located in the smoke-box so as to prevent or impede thepassage of sparks from fire-tubes to the chimney and composed ofsections arranged telescopically one within and one below another, andeach comprising a framework composed of vertically-arranged bars havingmetallic material wound therearound, means for supporting and securingsaid arrester in a normal position,an intermediatelypivoted lever havingone end connected to the lower or lowest section of said arrester, and aweight carried by the opposite end of said lever, substantially asdescribed.

Signed at Charing Cross Hotel, London, V. 0., this 28th day of April,1902.

HARRY SMITH WVAINlVRlGHT.

